Pressure regulator



Aug. 5 i924.

J. B. BURDETT PRESSURE REGULATOR Filed Api-11 19. 1923 Patented Aug. 5,1924.

TED STATES itam JOHN B. BURDETT, or HIGHLAND PARK, ILLINOIS.

rREssURE REGULATOR.

Application led April 19, 1923. Serial No. 633,243.

To all whom t may concern.'

Be it known that I, JOHN B. BURDETT, a citizen of the United States,residing at Highland Park, in the county of Lake and State of Illinois,have invented certain new and useful Improvements in PressureRegulators, of which the 'following is a specification. l

The object of this invention is to produce l0 a simple, practicalpressure regulator which has its indicatorsl contained iny the samestructure, and the dials of the indicator mounted in suitable relationto kthe adjusting handle. Y

Another object of the inventionis tol promeohanism in a pressurechamber, which can be readily removed for inspection andrepair throughthe opening covered by the diaphragm.

Another object vis to prevent the operator from injuring the diaphragmby adjusting the screw too i'ar in.`

Another object is to simplify the assemv bling of the indicator into thedevice and to do away with all outside connections.

Referring to the accompanying drawings: Fig. 1 is a cross section of apressure regu# lator embodying myA invention. l

Fig. 2 is a section on line 2 2 of Fig. 1. F ig. 3 is a section on linek3 3 of Fig. 1.

The housing 1 of the device is cylindrical in vform andhas atransverse`partition-2y dividing it into a pressure chamber 3-and a compartment 4.The chamber 3 -isv covered bya diaphragm 5 which is held in placeoverthe end of the housing 1 by thecover or bell housing 6, which isthreaded or otherwise reg.A

movably secured to the housing 'l The Ainlet passage 71is formed in theside Wallof the chamber 3 and is tapped eXternally to receive theyiitting 8 by which the .whole device is secured to the gas-storage tankand connected Vt0 the gas under high pressure which is contained inthetank. The inlet nozzle 9 is threaded into the inlet passage 7 andextends parallel to the diaphragm 5. The innerV end of the nozzle 9 iscovered .by a screen 10 whichl 50;is secured .in the end. ofthe nozzle.The valve seaitll is formed around the opening in thenozzle, and atubular guide portion 12 is formed concentric with the valve-seat. A

disk-shaped valve 13 coi-operates with the.

55.. valve-seat v11 and is loosely slidable in the guide `12. The backof this valve 13 is vide a simplified valve and valve-control Vunit 31.s

rounded and contacts with the flat :Eaceof the disk 14, which is alsoslidable in the guide`12. A pressure-transmitting member 15, pointed onboth ends, has oneend slidable in the guide' 12 and touching thebacksurface of the disk 14. The other end of the member 15 contacts .the arm16 of Vthe bell crank 17. f The bell-crank 17 is pivoted in a bracket 18which is removably secured in a lug 19 which is integral with the wallof the pressure chamber 3. A valveclosing spring 16a' is seated in thewall ofthe pressure chamber 3 and presses the arm 160i the bell crank 17against the memberr 15, and consequently tends to hold the valve 13against its seat 11. The arm 2O of thebell crankis slotted at theend,and the pin 21 of they Vmember 22 is engaged in the slot. The memfber 22 is commonly called the diaphragm nut, and its stem passes througha hole in the center of the diaphragm 5,-and`screws into the diaphragmplate 23. YA compression spring 24 seats in a circular groove `in thediaphragm plate 23 and carries a springcup 25 at its free end. Thespring cup 25 has the tension spring 26 mounted? therein, and the freeend of the spring' 26 isengageid bythe poi-nt of the adjusting screw27.A Theadjusting screw threads-through the end of the bell housing 6vand is operated by the handle28. I" I The pressure indicator29 comprisesthe highfp'ressiue unit 3() and thelow pressure The mechanism 29is'mounted and assembled on'the dial plate 32, and a high-pressureconnecting tubel 33 and a lovvpressure connecting tube 34 are securedtothe indicator mechanism. When the dial plate is assembledv intheYcompartment 4, the'tubes 33 `and 34 are passed through holes in thepartition k2, and then the dial plate 32 is fastened in place by meansof screws. This is done before themechanisin in the pressure.

chamber 3i`s assembled in place. The highpressure tube 34 simply goesthrough the partition 2. The ends of the tubes can then be sealed vinfromithe open end ofV the pres-y sure chamber 3.

This providesa very practical way of assembling the pressure indicator.into the regulator.

The tube 33 connects the high-pressure indicating mechanism 30 to theinlet; and the tube 34 connects the low-pressure mechanism t@ therese-lr@ Chamber lz- The @essere close.

as shown is not likely to get out of order, and is contained within thehousing.

In the operation of pressure regulators, owing to the very severe andexacting duty which a regulator has to perform, it is very frequentlynecessary to take out the regulator parts in the pressure chamber torcleaning and repairing. Any improvement which improves the accessibility'of these parts is quite important to the operator.

When the regulator is to be attached to the storage tank, the adjustingscrew 27k is loosened or turned outwardly from the bell housing 6. Thisrelieves the diaphragm 5' from the pressure of the springs 211 and 26.Then a connection is made the gas under high pressure is admitted to theinlet passage 7. This pressure is thereby connected to .thehigh-pressure indicator 30 and also flows into the pressure chamber 3 byraising the valve 13 against the tension of the spring 16a, and the gasflows in throughthe apertures 9a 1n the walls of the guide portion12 andinto the chamber 3. As the pressure is built up yin the chamber 3, thediaphragm is flexed outwardly, and because of its connection with thevalve 13, it will cause the valve to The point at which the pressure onthe large area of the diaphragm will cause the valve to be closedagainstV the small area of the inlet is regulated by the springadjustment on the outer surface of the diaphragm. As the diaphragm isloaded, its power to close the valve is reduced, and consequently higherpressures are maintained in the regulator chamber 3.

When the adjusting screw V27 is first adjusted inward it extendsthetension spring 26, and the pressure kof the spring 26 is carriedthrough the spring 24 to the diaphragm. As the screw 27 is turnedfurther in, the lengthening of the tension spring 26 is stopped bythebottom of the spring cup 25, and pressure is transmittedl from thediaphragm 5 through' the heavier compression spring 24. This provides adual range of adjustments for the regulator.

. Having thus described my invention, I claim:

1,. In a pressure regulator, the combination of a housing having atransverse partition-forming two chambers within the housing, one ofsaid chambers constituting the pressure chamber and having a passageleadinginto it,-and regulator pressure-indicating mechanism mounted inthe other chamber and having a tube connection leading through thepartition to the inlet passage and a tube connection leading through thepartition to the pressure chamber. Y

2. In a pressure regulator, the combination of a housing having atransverse partition dividing it into a pressure chamber and acompartment, a dial plate removably secured in the compartment,indicating mechanism mounted on the plate, and connecting tubes securedVin the indicating mechanism and adapted to be passed through thepartition and sealed from the open end of the pressure chamber.

3. In a pressure regulator, the combination of a housing havingtransverse partition dividing it into a pressure chamber and acompartment, a diaphragm secured over the open end of the pressurechamber, an inlet nozzle removably secured in the inlet passage in theside wall of the pressure chamber and extending parallel with thediaphragm, a bell crank pivotally mounted in the side wall of thechamber and having an arm parallel to and in pivotal connection with thediaphragm andan arm extending in front of the inlet nozzle, a valve forthe nozzle slidably mounted therein, a disk slidable in the nozzle andin point contact withr the valve, a member slidable in the nozzle and inpoint contact with thedisk and the secondmentioned bell-erank-arm, and aspring seated in the side wall of the chamber and pressin@ the secondbell-crank arm against the slidable member. f l

4L. In a pressure regulator, the combination of a housing having atransverse partition dividing it into a pressure chamber and acompartment, a diaphragm covering lthe open end of the chamber, a bellhousing clamping the diaphragm in place and removably secured to themain housing, an inlet nozzle rremovably secured in the inlet passage intheside wall of the pressure chamber and extending parallel with thediaphragm, a bell crank pivotally mounted in the side' wall of thechamber and having an arm parallel to and in pivotal connection with thediaphragm and an arm` extending infront of the inlet nozzle,va valve forthe nozzle slidably mounted therein, a disk slidable in the nozzle andvin point contact with t-he valve, a7 member slidable in the nozzle andin point contact with the disk and the second-mentioned bell crank arm,a spring seated in the sidewall of thechamber and pressing the. secondbell-crank arm against the slidable member, a compression springcontained in the bell housing and mounted on the inner surface of thediaphragm, a spring cup carried on the outer end of t-he compressionspring, a tension spring mounted in the spingcup, and an adjusting screwthreaded through the kbell housing and engaging the yend of thecompression spring. 5. In a pressure regulator, the combinationandorganization, substantially as described, olar housing having atransverse partition dividing it into a pressure chainber and acompartment, adiaphragm covering the open end of theV pressure chamber,a bell housing'removably secured to the first mentioned housing andclamping the diaphragm in place, aninlet nozzle removably secured in theinlet passage in the side Wall of the pressure chamber and extendingpar- 'allel with the diaphragm, a bell crank pivotally mounted in theside Wall of the chamber, the first arm of the bell crank being inpivotal engagement with the diaphragm, and the second arm of the bellcrank extending lin front of the inlet nozzle, a valve for the nozzleand slidably mounted therein, a disk slidable in the nozzle and in pointcontact With the valve, a member slidable in the nozzle and vin pointcontact With kthe disk and also in point contact n with the secondmentioned arm of the bell crank, a spring mounted in the 'side Wall ofthe chamber and pressing the second mentioned bell crank arm against theslidable member, a dial removably secured in the compartment, indicatormechanism mounted on the dial, and two connecting tubes secured in theindicator mechanism, one of the tubes `making a connection to the inletpassage and the other tube making a connection to the pressure chamber.

6. In combination in a pressure regulator, a housing, a transversepartition in the housing forming a compartment `and a chamber which hasan outlet and an inlet, pressure regulating means operated by pressuresWithin the chamber, and means Within the compartment for indicating boththe pressure at the inlet and the pressure Within the chamber.

7. In combination in a pressure regulator, a housing, a transversepartition in the housing forming a compartment and a chamber Vhaving aninlet, a dial indicator mounted in the compartment and adapted to showboth the pressure at the inlet and the pressure in the chamber.

8. In a pressure regulator, a housing, pressure regulating meanscontained Within the housing and having an inlet and an outlet, andpressure indicating means comprising a high pressure unit having anoperativeconnection to the inlet and a low pressure unit having anoperativek connection With the outlet, said indicating means With theconnections being contained entirely Within the housing.

JOHN B. BURDETT.

